Search for Google Chrome in Google and you are not going to see google.com/chrome as the top result.
The company has decided to penalize their own website for Chrome for violating their own guidelines related to paid link marketing.
This penalty would apply for 60 days. After which it should be back to normal.
Google of course already has a sponsored link at the top (properly highlighted as an ad) to direct the users to the Chrome’s homepage.
I’ll give the short summary, then I’ll describe the webspam team’s response. Google was trying to buy video ads about Chrome, and these sponsored posts were an inadvertent result of that. If you investigated the two dozen or so sponsored posts (as the webspam team immediately did), the posts typically showed a Google Chrome video but didn’t actually link to Google Chrome. We double-checked, and the video players weren’t flowing PageRank to Google either.
However, we did find one sponsored post that linked to www.google.com/chrome in a way that flowed PageRank. Even though the intent of the campaign was to get people to watch videos–not link to Google–and even though we only found a single sponsored post that actually linked to Google’s Chrome page and passed PageRank, that’s still a violation of our quality guidelines, which you can find at http://support.google.com/webmasters/bin/answer.py?hl=en&answer=35769#3 .
In response, the webspam team has taken manual action to demote www.google.com/chrome for at least 60 days. After that, someone on the Chrome side can submit a reconsideration request documenting their clean-up just like any other company would. During the 60 days, the PageRank of www.google.com/chrome will also be lowered to reflect the fact that we also won’t trust outgoing links from that page.